小编Waq*_*jua的帖子

我的应用程序需要存储cookie.当用户登录时,我想确保如果cookie不存在,则创建它并存储值,但是如果它确实修改了它.

if(cookieExist)
 {
    cookiename = "value";
 }
else
 {
   create a new cookie 
   then store the value;
 }

谢谢你的帮助

我尝试过这几种方法,每次尝试时都会出错.

这是使用.net 3.5与asp.net(窗体)和vb.net.

例子:

Dim _registrations = New List(Of Integer)

Dim regList As String

Dim ListOfReg = _registrations.convertall(Of String)(Function(i As Integer) i.ToString())

regList = String.Join(",", ListOfReg.ToArray())

错误信息:

Overload resolution failed because no Public 'convertall' can be called with these arguments: 'Public Function ConvertAll(Of String)(converter As System.Converter(Of Integer,String)) As System.Collections.Generic.List(Of String)': Argument matching parameter 'converter' cannot convert from 'VB$AnonymousDelegate_0(Of Integer,String)' to 'Converter(Of Integer,String)'.

其他尝试:

regList = String.Join(",", (_registrations.Select(Function(reg) reg.ToString()).ToArray()))

错误信息:

Public member 'Select' on type 'List(Of Integer)' not found.

任何帮助表示赞赏.

谢谢.

例如.这些xml标签是否可接受.

<xml>
<3333>abc</3333>
<ab#$3>def</ab#$3>
</xml>

我的问题是我可以创建整数值的标签或带有特殊字符的标签吗？

我试过这个

FileStream fs = new FileStream((filename), FileMode.Append);
XmlWriter w = XmlWriter.Create(fs);
w.WriteStartElement("3454");

并得到以下错误 {System.ArgumentException: Invalid name character in '3454'. The '3' character, hexadecimal value 0x33, cannot be included in a name. at System.Xml.XmlWellFormedWriter.CheckNCName(String ncname) at System.Xml.XmlWellFormedWriter.WriteStartElement(String prefix, String localName, String ns) at System.Xml.XmlWriter.WriteStartElement(String localName) at WindowsFormsApplication1.Form1.fn_setMapping(SqlString keyString, SqlString column, SqlString value)

谢谢

我从CodePlex下载了代码 然后我安装了live,telerik等的sdk

安装后我运行代码,我收到以下错误

   `0x800a1391 - JavaScript runtime error: 'WinJS' is undefined`

这里出现错误在Converters.Js文件中

(function() {
   var r = Windows.Storage.ApplicationData.current.roamingSettings.values;

    // Export shortDate
    WinJS.Namespace.define("codeSHOW.Converters", {  // Error Occured here

   });

})();

任何帮助都非常感谢.

谢谢.